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Enable --gcc through macros in header file

Hoi Wong
Prodigy 70 points

I have one C header file (used as a debug tool) that must use GCC extension (variadac macro) and I want the header file itself to enable GCC extension (--gcc switch) automatically or throw a #error if the compiler doesn't support --gcc. i.e. if the user choose to include the header file (tool) in their project, the project will be automatically upgraded to support GCC extension or the project will fail to compile.

Is there a neat way to do that in CCS? I couldn't find any pragma related to that in the compiler/assembler manual.

  • TI__Guru**** 244930 points

    You can't do that.  But you can add this to your header file ...

    #ifndef __GNUC__
    #warn "This file must be built with --gcc"
    #endif

    The preprocessor symbol __GNUC__ is automatically defined by the compiler when the option --gcc is used.

    Hope this helps ...

    -George

  • in reply to George Mock
    TI__Guru**** 244930 points

    George Mock said:
    The preprocessor symbol __GNUC__ is automatically defined by the compiler when the option --gcc is used.

    This is not true of all versions of the TI compiler.  See this forum thread for more detail in regards to the TI ARM compiler.  The situation on other compilers is similar.

    Thanks and regards,

    -George